Paragraph 83
Where in consequence of the proposed construction of any of the authorised works, the undertaker or an undertaker requires the removal of apparatus under paragraph 77(2) or (3) or an undertaker makes requirements for modifications to the undertaker’s works or for the protection or alteration of apparatus under paragraph 79 (retained apparatus: protection) or the statutory undertaker is required to access its apparatus in temporarily stopped up streets under paragraph 74, the undertaker must use its best endeavours to co-ordinate the execution of the works—
in the interests of safety;
taking into account the efficient and economic execution of the authorised development; and
taking into account the need to ensure the safe and efficient operation of the statutory undertaker’s undertaking,
and the statutory undertaker must use its best endeavours to co-operate with the undertaker for that purpose.
For the avoidance of doubt whenever the undertakers or statutory undertaker’s consent, agreement, approval or expression of satisfaction is required in relation to plans, documents or other information submitted by the undertaker or statutory undertaker or the taking of action by the undertaker or statutory undertaker, it must not be unreasonably withheld or delayed.